FVXX21 KWBC 231310 VOLCANIC ASH ADVISORY STATEMENT ISSUED 1310 UTC 23 JAN 2000 BY THE WASHINGTON VAAC . TUNGURAHUA 00-092 ECUADOR 0128S 7826W . BACKGROUND: TUNGURAHUA ECUADOR (1502-08) SUMMIT HEIGHT 16480 FT (5023 M) . SOURCES OF INFORMATION: GOES-8 INFRARED AND MULTISPECTRAL IMAGERY...23/0000 UTC UPPER AIR DATA FROM THE GEOPHYSICAL INSTITUTE. . ERUPTION DETAILS: OCCASIONAL EMISSIONS OF ASH AND STEAM. . DETAILS OF ASH: SATELLITE IMAGERY THROUGH 23/1215 UTC DOES NOT INDICATE ANY ASH OR STEAM. THERE IS HOWEVER AN ABUNDANCE OF SHOWER AND THUNDERSTORM ACTIVITY WHICH IS SENDING AN OVERCAST THROUGHOUT THE REGION. ANY ASH OR STEAM EMISSIONS FROM SMALL EXPLOSIONS WOULD LIKELY BE NEAR-SUMMIT AND REACH PERHAPS AS HIGH AS FL200. THE GEOPHYSICAL INSTITUTE LAST WEEK REPORTED NUMEROUS SMALL EXPLOSIONS AND A LARGE AMOUNT OF CORRESPONDING SEISMIC ACTIVITY. . TRAJECTORY: ANY ASH OR STEAM FROM THE SUMMIT TO FL200 SHOULD MOVE TO THE WEST AT 20 TO 25 KNOTS. . OUTLOOK: SEE SIGMETS. . THE NEXT STATEMENT WILL BE ISSUED BY 23/1930 UTC. . REAL TIME SATELLITE IMAGERY ALONG WITH THIS AND OTHER VOLCANIC ASH ADVISORY STATEMENTS OFTEN ACCOMPANIED BY A MAP DEPICTING ASH LOCATION ARE AVAILABLE AT INTERNET URL ADDRESS http://www.ssd.noaa.gov/VAAC/washington.html (all lower case except /VAAC/) . PLEASE REFER TO SIGMETS FOR CURRENT WARNINGS. . ORRISON . NNNN